early versus late caffeine for elbw newborns

Conditions: Bronchopulmonary Dysplasia; Apnea of Prematurity

Summary: caffeine is routinely used in the management of apnea of prematurity. extremely low birth weight (elbw) infants are at higher risk of mortality and various neonatal morbidities such as bronchopulmonary dysplasia (bpd) for which caffeine has been shown to be beneficial in very low birth weight (vlbw) infants. the investigators' previous unpublished retrospective studies and recently published retrospective studies demonstrated that early caffeine given within 48 hours of age tended to decrease the incidence of death and bpd in elbw newborns. retrospective design can be biased as newborns with mild lung disease may have received caffeine early for extubation. there are several studies on pharmacodynamics and pharmacokinetics of caffeine. the data regarding cumulative dosage of caffeine, caffeine levels and bpd outcome is deficient. primary objective of this study is to test the hypothesis that early caffeine given within 24 hours of life will decrease incidence of mortality and bpd in ventilated elbw newborns. this study will also test an additional hypothesis that higher caffeine dosage and caffeine levels are associated with decreased mortality and postnatal morbidities in studied newborns.

parents will be approached either prenatally for an impending delivery of elbw newborn or within 16 hours of birth. 90 newborns will be randomized to receive early caffeine within 24 hours of life (the "study drug") and 90 newborns will receive a placebo. either the early caffeine (the "study drug") or placebo will be continued throughout the first 15 days of life. newborns in the early caffeine group will receive an iv bolus of 20mg/kg followed by iv or po 5mg/kg daily for 14 days. the clinical team can choose to give po caffeine if the newborn tolerates \>75% of fluid goals by feeds. the clinical and research teams will be blinded; neither will know whether the newborn is receiving early caffeine or placebo. the clinical team will be allowed to use open labeled caffeine as deemed medically necessary after 24 hours of receiving either the early caffeine or placebo. often this clinical need would be at the time of extubation (peri-extubation) and comprises the "late" caffeine group, which is also the placebo group. perinatal and postnatal clinical characteristics will be prospectively collected. clinical team may choose to hold study drug if newborns are placed on high frequency ventilation or if they need sedation drips for surgical procedures. two blood samples will be collected one at day 7 and one at day 14 for caffeine levels. data safety monitoring committee will be review mortality and morbidity in each group on a quarterly basis or after recruitment of every 30 newborns whichever happens earlier.

Eligibility criteria:
inclusion criteria: * newborns with birth weight less than or equal to 1000grams and less than 28 weeks of gestation are included if intubated by 12 hours of life exclusion criteria: * newborns with known congenital malformation * newborns whose parents refuse consent for the study * newborns who are on high frequency ventilation and/or receiving more than 80% oxygen at 12 hours of age * newborns deemed non-viable by the clinical team (defined as those neonates born at \<24 weeks gestation and whose parents are offered withdrawal of support or do not resuscitate by clinical team for severity of cardiorespiratory illness at or before 12 hours of age) * newborns diagnosed with congenital heart disease within the first 12 hours of life (presence of a ventricular septum defect and a patent ductus arteriosus is not an exclusion criteria)